2) Dimensional homogeneity Fundamental premise All theoretically derived equations are dimensionally homogeneous----that is, the dimensions of the left side of the equation must be the same as those on the right side and all additive separate terms must have the same dimensions For example, the velocity equation 0 +at In terms of dimensions the equation is LT=lt+lt ----dimensional homogeneous Heat Transfer Su Yongkang School of Mechanical EngineeringHeat Transfer Su Yongkang School of Mechanical Engineering # 4 2) Dimensional homogeneity Fundamental premise: All theoretically derived equations are dimensionally homogeneous----that is, the dimensions of the left side of the equation must be the same as those on the right side, and all additive separate terms must have the same dimensions. For example, the velocity equation, In terms of dimensions the equation is ----dimensional homogeneous −1 −1 −1 LT =  LT + LT V =V + at 0